Professor Ichabod Crane was a professor of history at Merton College, Oxford. He enlisted in the Queen's Royal Regiment and was sent to the American colonies to fight the patriots. However, when he saw their bravery, Ichabod defected and It didn't take long for me to have a change of heart and I defected.became a spy for General George Washington. Washington tasked him with killing the Horseman, one of the Four Horsemen of the Apocalypse.

Ichabod did so but was killed in the process... only to be resurrected 250 years later by a coven of good witches. The Horseman has been reborn as well, and Ichabod is determined to stop him and the others before they doom the world.

Abbie is no stranger to the supernatural, having encountered a demon-like figure in the forest while she and her sister were in high school. Since then, she has never been able to fully trust her senses. She trained as a policeman and received admittance to Quantico to train as a FBI agent. Before she could leave Sleepy Hollow, her partner August Corbin was killed by the Horseman and she met Ichabod Crane, a man over two centuries out of her own time. Despite his seemingly insane claims, Abbie believes Ichabod and has recruited him to help her track down the Horseman and avenge her partner's death.

The police captain of Sleepy Hollow, Irving is a by-the-book cop... who may harbor a dark secret. He soon becomes Abbie and Ichabod's trusted ally, hiring Ichabod as a "historical consultant" from Harvard to give him access to police files. However, when a demon possesses those close to him to get at Frank's family, he is framed for two murders, convicted, and sent to prison.

Katrina married Ichabod crane and served as a civilian nurse with the Continental Army. She was also secretly a member of a good coven of witches, sworn to fight the darkness. She arranged for her husband to survive a mortal wound and awaken when the time was right to stop the Four Horseman from destroying the world.

Abbie's old sister, Jenny spent years in a psychiatric institute. She also worked with Sheriff Corbin, doing his fieldwork for him as he researched the rumors of the coming Apocalypse. She was initially hostile to Abbie, who she believed had abandoned her while denying the reality of seeing Moloch in the forest. However, the two sisters eventually reconciled and Jenny now helps Abbie in her battle against Moloch and the Horsemen.

Ichabod and Abbie tracked down Henry Parrish, believing that he was a Sin-Eater who could consume and recognize sin in others. However, they soon discovered that he was in fact Ichabod and Katrina's lost son Jeremy, sealed away 200 years ago by the coven because of the mystical powers that he inherited from his mother. Moloch eventually freed him and made him his Horseman of War, and Henry seeks to free his master from Purgatory so that he can serve at his side and lay waste to the earth.